x It says, take the name x and create a binding for that name to the value of the sub-expression and in fact to do this, to stress a point, let's do that.
它的意思是,创建了一个名字,然后创建了对于这个名字,和子表达式的值的绑定,实际上这么做,我们是为了,要强调一个点,让我们来说说这个点。
And the second is just alignment with what we're trying to do.
第二点就是,对于这项事业有认同感。
Second thing, we started talking about the periodic table and I believe that it's a hallmark of any educated person in the 21st century who is technically literate to know the periodic table by heart.
第二点,我们之前讨论过元素周期表,我相信这是个标志性的特征,对于那些在21世纪里,用心去学习,元素周期表的人来说。
So for those more comfortable what does it do?
对于这些更舒适点的东西,它干了些啥事呢?
So now in this problem, we can do something slightly different, and let's use this expression here,and I will do that, then I'll stop for today.
对于这个问题,我们可以稍微做点变化,让我们用这个式子,就是这样,今天就讲到到这里
Remember last time, I said that there's different kinds of complexity in our code, and I suggested for simple branching programs, the amount of time it takes to run that program is, in essence, bounded by the number of instructions, because you only execute each instruction at most once.
但是这里有个很重要的点,记得上节课,我提过在我们的代码中,有不同种类的复杂度,而且我还说了对于简单的分支程序,运行这种程序需要的总体时间,大体上,是和指令的数目相关的,因为每个指令只会被执行最多一次。
So if we were management consultants working for Mckinsey or something, and we were brought in to advise you on your homework assignments, or this law partnership on their work practices, we would come down with a prediction that this is how much work you're going to get.
如果我们是麦肯锡公司的管理顾问,或者给你们的作业提出点好的建议,或者对于现实中的律师事务所,我们都能够预测出来,你可能会投入多少工作量
It says if I want to get the length of a segment, going to pass in that instance, it says from that instance, get the start point, that's the thing I just found.
它的意思是如果我想要,得到一个线段的长度,首先要把这个实例传进来,然后对于这个实例,从开始点,取得x坐标,然后通过同样的操作。
And then I've got some things that get me back out information about them.
好,一个模板,对于一个点有x坐标,y坐标,半径,角度。
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